Pat shrimp dry with paper towels and season with salt. Grease the broiler pan with vegetable or other light oil. Using a sharp paring knife, cut a 1-inch opening along the back of shrimp (where the vein was located) to butterfly it. Arrange the shrimp cut-side down on the broiler pan. Divide bread crumb mixture among the shrimp, pressing it into balls between the tails and body. Bake 10-15 minutes for extra-large shrimp or 20-25 for colossal. As soon as the shrimp turn pink, they're done.

Combine lemon juice and melted butter. Remove shrimp from oven and drizzle with lemon juice and butter mixture before serving.